Rotary valve.



R. B. RANsoM. ROTARY VALVE.

APPLICATION FILED OOTJB, 1913.

Patented Allg. 18, 1914.

R. B. RANSOM.

ROTARY VALVE.

APPLICATION FILED 001218, 1913.

Patented Aug. 18, 1914 A m/mmw 0 W/T/VESSES ATTORNEYS with o. source ofmotive lagent suppl RlCH'ABD BRUCE RANSOM, 0E SUTHERLANI), FLORIBA.

ROTARY VALVE.

Specication of Letters Patent.

Patented Aug. 18, lille.

Application led October 18, 1913. Serial No. 795,889.

The invention relates to internal combus.

tion engines, and im object is to provide a new and improved rotaryvalve arranged to coverthe admission. of the explosive mixture and theexhaust of the products of cornhuston in such a manner that the timingof the explosion is accurate and carbon deposits are prevented.

.For the purpose mentioned use is made of n valve casing provided withadmission and exhaust ports leading into the Working chamber Aort theengine, a, hollow valve mounted to rotate in the seid valve casing ondprovided with ports adopted to register with. the seid admission andexhaust ports and a fixed shelliftting into the said hollow valve andprovided with separate chambers and por/ts leading from the chambers andadapted to register with the said valve ports, one ofthe said chambersbeing conneete an tlm/othery chamber being connected with an exhaustpipe for carrying oil the products of combustion.

1A practical embodiment of the invention is represented in theaccompanying drawings forming a art of this specificfition, in

` which similar c oracters of reference indicet-e corresponding parts inall the views.

. #Figure l. is c cross section of the rotary volvo as applied to uninternal combustion engine. shown in elevation; Fig. 2 is a sectionalplfn view of the same on the line 2-2 0f-Fig: l; Fig. 3 is a crosssection of the saine on the line 3 3 of'Fig. 4;; Fig. 4 is alongitudinal central section of the same on the lineal-4v of Fig. 3;Fig. 5 is a cross section of the same on the line 5 5 of Fig. e; Fig.tis s perspective view of the hollow valve with port broken out; andFig. 7 is a similar view of the shell.

In the cylinder A. of an internal combustion engine is mounted toreciprocate a pis ton. B- connected b e pitmen C with the crank ermvED'v of t e engine shaft D journaled in' suitable .bearings arranged inthe crank caseEfEy on which the cylinder A is mounted-` Qnihe top of thecylinder A is secured (informed o. valve casing F having a conical boreinto which tits e correspond ingly shaped hollow valve G provided withan inner taperingr face onto which lits a correspondingly shaped shellH.. The valve casing F is open et both ends while the hollow valve G hasone end G open While the other end G2 is provided with a sprocket wheelG3 connected by a sprocket chain I with a sprocket Wheel I secured on ashaft I2 journaled in a bracket J attached to the cylinder A. 0n theinner face of the sprocket Ywheel l is secured e bevel gear Wheel K inmesh with o level gear wheel K attached to a shaft K2 provided at onoouter end with a sprocket wheel K3 connected by E sprocket chain K* witha sprocket Wheel K5 secured on the engine shaft D so that when theengine is running aV rotary motion is transmitted from the engine shaftD to the valve G to rotate the latter inthe direction of the arrow Theinner end of the Working chamber A of the cylinder A is preferablyhernispherin cal, as plainly indicated in Figs. 3 and 4, and into thesaid Working chamber opens the admission porta and the exhaustport theports leading to the interior of the valve casing F. vThe valve G isprovided in its wall with ports a', i, adapted to register with theports a and b, and the shell H is provided with ports c2, o2 adapted toregister with the ports an. b. The shell ports a, b2 open into anadmission chamber H and en exhaust chamber H2 formedby providing theinterior of the shell H with a longitudinally extending partition H3, asplainly indicated in Figs. 2 and 5. The left-hand end H* of the shell Hextends beyond the corresponding ends of the valve casingF and the valveG and to this projecting end H" aire secured pipes L und L connectedwith the y ends of the chambers H and H2. The `pipe L is connected witha, suitable source of motive ugent supply such es the carbureter of theengine. and the pi )e L is the exhaust pipe for carrying` off t 1eproducts of comn bustion to it suitable place of discharge. The portsa2, b2 are located directly opposite'the ports o. and b so that when thevalve G is rotated in the direction of the arrow w", es previouslyexplained, then the ort registers with the ports a', a et the time thepiston B is on the suction stroke, so that the explosive mixture isdrawn into the working chamber A. of the cylinder A by Way of the pipeL, chamber H'` and registering ports a2, a and ./z. During the returnstroke and the next foliowing power stroke oi the pis4 ton B the ports aand if are closed oy the valve G, and when the piston B returns on theexhaust stroke the port b registers with the ports b2 to allow theproductsof conibustion to pass out of the working chamber A by Way ofthe ports b, and b2 and the chamber H2 of the pipe L. Un the nextfollowing suction stroke the port a again moves into register with theports at', a, and the above-described operation is repealed.

The easing F, the valve G and the shell H are made conical to insure asnug t of the members mentioned with a view to prevent leakage of themotive agent or the exhaust and in order to take up wear of thecontacting surfaces of the casing F, valve G and shell H, the followingarrangement is made: A screw rod N mounted to screw in a bracket Fforming part of the valve casinggr F and the said screw N extendsthrough the hollow end G2 of the valve G and is mounted to turn in theright-hand end H5 of the shell H. On turning the screw rod N in onedirection the shell il is drawn to the right so as tofit snugly' withinthe valve G and the latter is moved hy the shell H to the right so as tofit snugly into the valve easing F. The movement of the valve Gr to theright is limited by set screws O screwing in the bracket F and abutting'against lugs G4 formed on the end l2 of the valve G. The workingreliainli'er A is pros vided with a suitable .ignition devine l to ignitethe explosive mixture at the end of the compression stroke of the'piston B. It is understood that the shell H is held against turning bythe pipes L, L whichV latter are held a gainst movement by suitablehearings or supports, not shown.

From the foregoing it will be see-n that hy the arrangement describedthe valve G rotates properly intermediate the valve easing F and theshell H, and the ports a', Z7 refrister at the proper time with theports a, a? and Zi, b2 to insure a proper admission of the explosivemixture to the Working chamber A and a full and complete discharge ofthe products of combustion from the said working chamber.

It is understood that the gearing used for rotating the valve G from themain shaft l) is so proportl .ned that the valve G turns in unison withthe movement given to the piston D.

Having thus described my invention, Claim as new and desire to secure hyLetters Patent: f

l. A rotary engine valve, comprising valve casing' provided with aevlinder ad Lioseoe into ilse said hollow valve, the said shell having alengthwise extending partition dividinel theA shell into a supplychamber and an exiaust chainner5 the chambers having ports opposite thesaid admission and exhaust ports and the said valve having or-ts adantedto connect the said admissionv and exhaust ports with the correspondingports in the said Shell 2. A rotary engine valve, comprising a valveeasing provided with a cylinder admission port and a cylinder exhaustport, the ports leading to the cylinder of the engine, a hollow valvefitted to rotate in the said easing, and a non-rotatable shell fittinginto the said hollow valve and provided with a lengthwise extendingpartition dividing the said shell into a supply chamber and an exhaustchamber, `the said supply chamber having a port opposite the saidadmission port and the said exhausthamher having a port opposite thesaid exhaust port, and the said valve having ports of which one isadapted to Connect the said admission Cham'n loer port with the saidcylinder admission port and the other valve portis adapted to connectthe said cylinder exhaust port with the said exhaust chamber port.

3. A rotary engine valve, comprising a valve casing provided with aycylinder `admission port and a cylinder exhaust port, the ports leadingto the cylinder of the en- `eine, a. hollow valve fitted to rotate inthe said easing. a non-rotatable shell fitting into the said hollowvalve and provided with a supply chamber and an exhaust chamber, thesaid supply chamber having a port op posit@ the said admission port andthe said exhaust chamber having a port opposite the said exhaust port,and the said valve having ports of which one is adapted to connect thesai d admission chamber port with the said cylinder admissionport, andthe other valve port is adapted toconnect the said cylinder exhaust portwith the said exhaust chamber port, the said shell projecting at one endbeyond the said casing and the said valve, and pipes at tached to thesaid projecting shell end and eonneeted with the Chambers.

4. A. rotary engine valve, comprising a valve sang provided with acylinder admission port and a cylinder exhaust port, the ports leadingto the cylinder of the engineI a hollow valve fitted to rotate in thesaid casing, and a non-rotatable shell fitting into the said hollowvalve, the said shell having ports opposite the said admission andexhaust ports and the said valve having ports adapted to connect thesaid admission and exhaust ports with the correspoilding ports in thesaid Shellv the said valvehavinir iorly tapering fac @wg/j a rte-nina! lier of i ing face fitting onto the interior tapering ace of the saidvalve.

5. A rotary engine valve, comprising a valve casing provided with acylinder adiniion port and a `cylinder exhaust port, the ports leadingto the cylinder of the engine, a hollow valve fitted to rotate in thesaid casing, a nonrotatable shell fitting into the said hollow valve,the said shell having ports opposite the said admission and exhaustports and the said valve having ports adapted to connect the saidadmission and exhaust ports with the correspond ing ports in the saidshell, the said valve having exteriorly and interio'iy tapering facesand the said casing having a @Amical bore into which fits the exteriorface of Sh@ said valve and the said shell having an @X- terior taperingface fitting onto the interior tapering face of the said valve, andmeans for adjusting the said shell relative to the said valve and thelatter relative to the said casing.

6. A rotary engine valve, comprising a valve casing provided with aellnder admission port and a cylinder ex aust port,

the ports leading to the cylinder of the engine, a hollow valve iittedto rotate in the said casing a milfrotatable shell tting into the saidhollow valve3 the said shell having o ports opposite the Said admissionand exhaust ports and the said valve having ports adapted to conneer thesaid admission and exhaust ports with the corresponding ports in thesaid shell; the said valvehaving inte- In testimony whereof I havesigned my name to this speciication in the presence of two subscribingwitnesses RICHARD BRUCE RANSOM.

Witnesses L. E. JOHNSON, C. M. NAIL Jr.

onto the interior tapering face 4o

